http://wyso.org en http://wyso.org/post/officials-post-signs-toxic-algae-ohio-lake <p><span lang="EN">Officials have posted signs at a western Ohio state park lake to warn visitors about toxic blue-green algae.</span></p><p><span lang="EN">The state Department of Natural Resources posted the first signs of the year Thursday at four beaches in Grand Lake St. Marys.</span></p><p><span lang="EN">The Columbus Dispatch&nbsp;<font size="1">reports the signs warn people with weak immune systems to not swim or walk through the water. It also warns elderly and young people to stay away.</font></span></p> Fri, 25 May 2012 14:04:20 +0000 Associated Press 16637 at http://wyso.org Officials Post Signs on Toxic Algae at Ohio Lake